一种基于ForCES的网络虚拟化平台的研究与实现

发布时间：2018-02-28 06:08

本文关键词： 网络虚拟化 ForCES-in-ForCES 资源分配　出处：《浙江工商大学》2014年硕士论文　论文类型：学位论文

【摘要】：传统互联网在创新性、扩展性、管理性、灵活性等方面面临空前的挑战,互联网的“僵化”问题日益严重。近年来,在虚拟化技术发展的助力之下,网络虚拟化的出现很好地解决了网络的“僵化”问题,为网络架构的创新提供了无限可能,成为下一代互联网体系结构关注的重点。随着以Openflow为代表的软件定义网络成为研究热点,转发与控制分离技术也受到前所未有的关注,而该技术的典型代表就是IETF的ForCES。IETF ForCES前期关注模型和通信协议的研究,针对网络虚拟化部分的研究刚刚起步。本文首先以ForCES体系结构为基础,结合网络虚拟化技术,提出一种ForCES-in-ForCES的网络虚拟化方法。该方法对传统ForCES体系结构进行扩展,通过虚拟机技术构造出多个虚拟的ForCES网络件,从而达到构建多个不同虚拟网、满足不同业务需求的目的。然后,基于该方法,探讨控制平面和数据平面的虚拟化实现方式并给出实现该方法的虚拟化平台框架；同时,针对该虚拟化平台中FE的资源分配问题,提出一种基于两次迭代作差的FE资源分配算法,在满足虚拟网包处理能力的前提下,解决虚拟网中FE资源的分配问题,使平台中FE的数量和FE利用率尽可能合理。对于提出的网络虚拟化平台的设计框架,本文在实现中利用VirtualBox虚拟化软件构建CE和FE虚拟化平台,通过编写脚本程序来设计CE虚拟化过程管理(CEM)模块,用于控制和管理虚机创建的过程,采用PXE、DHCP、HTTP、TFTP及KickStart无人值守技术设计OS自动部署器以期完成对虚机部署过程的自动控制,借助Linux系统inotify监控机制实现监听器模块,监听CEM模块并控制FE虚拟化过程管理(FEM)模块。此外,设计并配置资源池模块,利用该模块中的资源感知器感知物理设备的资源使用情况。在平台实现后,利用SmartBits网络测试仪对平台性能进行测试,在不同场景下,比较分析平台的数据转发速率、丢包率、转发延迟以及包乱序等参数。
[Abstract]:The traditional Internet is facing unprecedented challenges in innovation, expansibility, manageability, flexibility, etc. In recent years, with the help of the development of virtualization technology, the problem of "rigidity" of the Internet is becoming more and more serious. The emergence of network virtualization has solved the problem of "rigidity" of the network and provided infinite possibilities for the innovation of the network architecture. As the software definition network represented by Openflow has become a research hotspot, the technology of forwarding and control separation has been paid more attention than ever before. The typical representative of this technology is the research of ForCES.IETF ForCES model and communication protocol of IETF. The research on network virtualization is just in its infancy. Based on ForCES architecture and network virtualization technology, this paper proposes a network virtualization method of ForCES-in-ForCES, which extends the traditional ForCES architecture and constructs several virtual ForCES network components through virtual machine technology. Then, based on this method, the virtualization implementation of control plane and data plane is discussed and the framework of virtualization platform is given. In view of the FE resource allocation problem in the virtualized platform, a FE resource allocation algorithm based on two iterations is proposed to solve the FE resource allocation problem in the virtual network under the premise of satisfying the processing ability of the virtual network packet. Make the number of FE in the platform and the utilization of FE as reasonable as possible. For the proposed design framework of network virtualization platform, this paper uses VirtualBox virtualization software to build CE and FE virtualization platform, and designs CE virtualization process management module by scripting. In order to control and manage the process of virtual machine creation, an OS automatic deployer is designed by using PXEX DHCP / HTTP TFTP and KickStart unattended technology in order to realize the automatic control of virtual machine deployment process, and the listener module is realized with the help of inotify monitoring mechanism of Linux system. Monitor CEM module and control FE virtualization process management module. In addition, design and configure resource pool module, use the resource sensor in this module to sense the resource usage of physical device. The performance of the platform is tested with SmartBits network tester. The data forwarding rate, packet loss rate, forwarding delay and packet order are compared and analyzed in different scenarios.
【学位授予单位】：浙江工商大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.01

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